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. 2013 Oct 30;8(10):e78572. doi: 10.1371/journal.pone.0078572

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© 2013 Kent A

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Examples of articulated sauropod cervical columns with condyles deeply inserted into their associated cotyles, leaving intervertebral gaps of only a few centimeters (see arrows). Camarasaurus lentus (DNM 28, A and D) and Barosaurus (CM 11984, B, C, and E). Photographs by the author and J. Michael Parrish.